/Engine/Source/Editor/UMGEditor/Public/WidgetBlueprintExtension.h
Get all subsystems currently present on an WidgetBlueprint
static [TArray](API\Runtime\Core\Containers\TArray)< [UWidgetBlueprintExtension](API\Editor\UMGEditor\UWidgetBlueprintExtension) * > GetExtensions ( const [UWidgetBlueprint](API\Editor\UMGEditor\UWidgetBlueprint) * InWidgetBlueprint )